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Comparing Coro/Coro/State.xs (file contents):
Revision 1.224 by root, Sun Mar 2 16:10:22 2008 UTC vs.
Revision 1.286 by root, Mon Nov 17 04:19:49 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
77/* 5.8.8 */ 93/* 5.8.8 */
78#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
80#endif 96#endif
81#ifndef newSV 97#ifndef newSV
82# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
83#endif 99#endif
84 100
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.8.7 */ 101/* 5.8.7 */
91#ifndef SvRV_set 102#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
93#endif 104#endif
94 105
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 117#endif
107 118
108/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
109 * portable way as possible. */ 120 * portable way as possible. */
110#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
111#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
112 126
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 128
115#if __GNUC__ >= 3 129#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
119#else 133#else
120# define attribute(x) 134# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
123#endif 137#endif
124 138
125#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
127 141
128#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
129 143
130#include "CoroAPI.h" 144#include "CoroAPI.h"
131 145
132#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 147# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 150#endif
140 151
141/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
142struct io_state 153struct io_state
143{ 154{
155 AV *res;
144 int errorno; 156 int errorno;
145 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
146 int laststatval; 158 int laststatval;
147 Stat_t statcache; 159 Stat_t statcache;
148}; 160};
149 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 168static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
156 171
157static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 174static SV *rv_diehook;
160static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
162 177
163/* async_pool helper stuff */ 178/* async_pool helper stuff */
164static SV *sv_pool_rss; 179static SV *sv_pool_rss;
165static SV *sv_pool_size; 180static SV *sv_pool_size;
166static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
167 185
168static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
170 188
171enum { 189enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 196};
179 197
180/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 199typedef struct coro_cctx
200{
182 struct coro_cctx *next; 201 struct coro_cctx *next;
183 202
184 /* the stack */ 203 /* the stack */
185 void *sptr; 204 void *sptr;
186 size_t ssize; 205 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 210 JMPENV *top_env;
192 coro_context cctx; 211 coro_context cctx;
193 212
213 U32 gen;
194#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
195 int valgrind_id; 215 int valgrind_id;
196#endif 216#endif
197 unsigned char flags; 217 unsigned char flags;
198} coro_cctx; 218} coro_cctx;
… …
203 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 225};
206 226
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 228typedef struct
229{
209 SV *defsv; 230 SV *defsv;
210 AV *defav; 231 AV *defav;
211 SV *errsv; 232 SV *errsv;
212 SV *irsgv; 233 SV *irsgv;
213#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
217 238
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 240
220/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
221struct coro { 242struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 244 coro_cctx *cctx;
224 245
225 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 248 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
228 250
229 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
233 256
234 /* statistics */ 257 /* statistics */
235 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
236 259
237 /* coro process data */ 260 /* coro process data */
… …
245 struct coro *next, *prev; 268 struct coro *next, *prev;
246}; 269};
247 270
248typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
250 279
251/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
252 281
253#define PRIO_MAX 3 282#define PRIO_MAX 3
254#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 286#define PRIO_IDLE -3
258#define PRIO_MIN -4 287#define PRIO_MIN -4
259 288
260/* for Coro.pm */ 289/* for Coro.pm */
261static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready;
264static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
265 295
266/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
267 297
268static SV * 298static SV *
269coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
270{ 300{
271#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 303 get_sv (name, create);
274#endif 304#endif
275 return get_sv (name, create); 305 return get_sv (name, create);
276} 306}
277 307
278static AV * 308static AV *
279coro_get_av (pTHX_ const char *name, int create) 309coro_get_av (pTHX_ const char *name, int create)
280{ 310{
281#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 313 get_av (name, create);
284#endif 314#endif
285 return get_av (name, create); 315 return get_av (name, create);
286} 316}
287 317
288static HV * 318static HV *
289coro_get_hv (pTHX_ const char *name, int create) 319coro_get_hv (pTHX_ const char *name, int create)
290{ 320{
291#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 323 get_hv (name, create);
294#endif 324#endif
295 return get_hv (name, create); 325 return get_hv (name, create);
296} 326}
… …
301 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
303 333
304 newpadlist = newAV (); 334 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 338#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 340#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 342 --AvFILLp (padlist);
313 343
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
316 346
317 return newpadlist; 347 return newpadlist;
318} 348}
319 349
… …
349 379
350 /* casting is fun. */ 380 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
353 383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385
354 return 0; 386 return 0;
355} 387}
356 388
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
360static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 393 0, 0, 0, 0,
362 coro_cv_free 394 coro_cv_free
363}; 395};
364 396
365#define CORO_MAGIC(sv,type) \ 397#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 398 expect_true (SvMAGIC (sv)) \
367 ? SvMAGIC (sv)->mg_type == type \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \ 400 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \ 401 : mg_find (sv, type) \
370 : 0 402 : 0
371 403
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374 406
375static struct coro * 407INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
377{ 409{
378 HV *stash; 410 HV *stash;
379 MAGIC *mg; 411 MAGIC *mg;
380 412
… …
395 mg = CORO_MAGIC_state (coro); 427 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
397} 429}
398 430
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
400 445
401/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
402static void 447static void
403get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
404{ 449{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 455 else
411 { 456 {
412#if CORO_PREFER_PERL_FUNCTIONS 457#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 458 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 460 CV *cp = Perl_cv_clone (cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 461 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 462 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 463 SvREFCNT_dec (cp);
418#else 464#else
… …
470 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
471 } 517 }
472 518
473 PUTBACK; 519 PUTBACK;
474 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
475} 524}
476 525
477static void 526static void
478save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
479{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
480 { 532 {
481 dSP; 533 dSP;
482 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
502 554
503 if (expect_true (CvDEPTH (cv))) 555 if (expect_true (CvDEPTH (cv)))
504 { 556 {
505 EXTEND (SP, 3); 557 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 558 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 560 PUSHs ((SV *)cv);
509 561
510 CvDEPTH (cv) = 0; 562 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 563 get_padlist (aTHX_ cv);
512 } 564 }
… …
551 #undef VAR 603 #undef VAR
552 } 604 }
553} 605}
554 606
555/* 607/*
556 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
560 */ 612 */
561#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
… …
592 644
593 New(54,PL_savestack,24,ANY); 645 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 646 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 647 PL_savestack_max = 24;
596 648
597#if !PERL_VERSION_ATLEAST (5,9,0) 649#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 650 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 651 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 652 PL_retstack_max = 4;
601#endif 653#endif
602} 654}
… …
604 656
605/* 657/*
606 * destroy the stacks, the callchain etc... 658 * destroy the stacks, the callchain etc...
607 */ 659 */
608static void 660static void
609coro_destroy_stacks (pTHX) 661coro_destruct_stacks (pTHX)
610{ 662{
611 while (PL_curstackinfo->si_next) 663 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 664 PL_curstackinfo = PL_curstackinfo->si_next;
613 665
614 while (PL_curstackinfo) 666 while (PL_curstackinfo)
… …
625 677
626 Safefree (PL_tmps_stack); 678 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 679 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 680 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 681 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 682#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 683 Safefree (PL_retstack);
632#endif 684#endif
633} 685}
634 686
635static size_t 687static size_t
… …
651 #undef VAR 703 #undef VAR
652 } 704 }
653 else 705 else
654 slot = coro->slot; 706 slot = coro->slot;
655 707
708 if (slot)
709 {
656 rss += sizeof (slot->curstackinfo); 710 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 713 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 715 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 716 rss += slot->savestack_max * sizeof (ANY);
663 717
664#if !PERL_VERSION_ATLEAST (5,9,0) 718#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 719 rss += slot->retstack_max * sizeof (OP *);
666#endif 720#endif
721 }
667 } 722 }
668 723
669 return rss; 724 return rss;
670} 725}
671 726
672/** coroutine stack handling ************************************************/ 727/** coroutine stack handling ************************************************/
673 728
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 729static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 730static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
731static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
732
733/* apparently < 5.8.8 */
734#ifndef MgPV_nolen_const
735#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
736 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
737 (const char*)(mg)->mg_ptr)
738#endif
676 739
677/* 740/*
678 * This overrides the default magic get method of %SIG elements. 741 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 743 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 751{
689 const char *s = MgPV_nolen_const (mg); 752 const char *s = MgPV_nolen_const (mg);
690 753
691 if (*s == '_') 754 if (*s == '_')
692 { 755 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 756 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 757
758 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
759 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
760
761 if (svp)
762 {
763 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
764 return 0;
765 }
695 } 766 }
696 767
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
769}
770
771static int
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{
774 const char *s = MgPV_nolen_const (mg);
775
776 if (*s == '_')
777 {
778 SV **svp = 0;
779
780 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
781 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
782
783 if (svp)
784 {
785 SV *old = *svp;
786 *svp = 0;
787 SvREFCNT_dec (old);
788 return 0;
789 }
790 }
791
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 793}
699 794
700static int 795static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 797{
… …
712 if (svp) 807 if (svp)
713 { 808 {
714 SV *old = *svp; 809 SV *old = *svp;
715 *svp = newSVsv (sv); 810 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 811 SvREFCNT_dec (old);
717 return; 812 return 0;
718 } 813 }
719 } 814 }
720 815
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 817}
723 818
724static void 819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
725coro_setup (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
726{ 834{
727 /* 835 /*
728 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
729 */ 837 */
… …
736 PL_curpm = 0; 844 PL_curpm = 0;
737 PL_curpad = 0; 845 PL_curpad = 0;
738 PL_localizing = 0; 846 PL_localizing = 0;
739 PL_dirty = 0; 847 PL_dirty = 0;
740 PL_restartop = 0; 848 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0;
851#endif
741 852
742 /* recreate the die/warn hooks */ 853 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 856
746 GvSV (PL_defgv) = newSV (0); 857 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 858 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 859 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv)); 861 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 863
753 { 864 {
754 dSP; 865 dSP;
755 LOGOP myop; 866 UNOP myop;
756 867
757 Zero (&myop, 1, LOGOP); 868 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 869 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 870 myop.op_flags = OPf_WANT_VOID;
760 871
761 PUSHMARK (SP); 872 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 877 SPAGAIN;
767 } 878 }
768 879
769 /* this newly created coroutine might be run on an existing cctx which most 880 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
772 * so we ENTER here for symmetry
773 */ 882 */
774 ENTER; 883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
775} 884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
776 885
886 coro_throw = coro->throw;
887}
888
777static void 889static void
778coro_destroy (pTHX_ struct coro *coro) 890coro_destruct (pTHX_ struct coro *coro)
779{ 891{
780 if (!IN_DESTRUCT) 892 if (!IN_DESTRUCT)
781 { 893 {
782 /* restore all saved variables and stuff */ 894 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 895 LEAVE_SCOPE (0);
… …
803 915
804 SvREFCNT_dec (PL_diehook); 916 SvREFCNT_dec (PL_diehook);
805 SvREFCNT_dec (PL_warnhook); 917 SvREFCNT_dec (PL_warnhook);
806 918
807 SvREFCNT_dec (coro->saved_deffh); 919 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 920 SvREFCNT_dec (coro_throw);
809 921
810 coro_destroy_stacks (aTHX); 922 coro_destruct_stacks (aTHX);
811} 923}
812 924
813static void 925INLINE void
814free_coro_mortal (pTHX) 926free_coro_mortal (pTHX)
815{ 927{
816 if (expect_true (coro_mortal)) 928 if (expect_true (coro_mortal))
817 { 929 {
818 SvREFCNT_dec (coro_mortal); 930 SvREFCNT_dec (coro_mortal);
… …
823static int 935static int
824runops_trace (pTHX) 936runops_trace (pTHX)
825{ 937{
826 COP *oldcop = 0; 938 COP *oldcop = 0;
827 int oldcxix = -2; 939 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
830 942
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 { 944 {
833 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 964 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 965 : bot;
854 966
855 av_extend (av, top - bot); 967 av_extend (av, top - bot);
856 while (bot < top) 968 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 969 av_push (av, SvREFCNT_inc_NN (*bot++));
858 970
859 PL_runops = RUNOPS_DEFAULT; 971 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 972 ENTER;
861 SAVETMPS; 973 SAVETMPS;
862 EXTEND (SP, 3); 974 EXTEND (SP, 3);
… …
942 1054
943 TAINT_NOT; 1055 TAINT_NOT;
944 return 0; 1056 return 0;
945} 1057}
946 1058
1059static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1061{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0;
1064}
1065
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1066/* inject a fake call to Coro::State::_cctx_init into the execution */
948/* _cctx_init should be careful, as it could be called at almost any time */ 1067/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */ 1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
950static void NOINLINE 1070static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1071cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1072{
953 dSP; 1073 dSP;
954 LOGOP myop; 1074 UNOP myop;
955 1075
956 PL_top_env = &PL_start_env; 1076 PL_top_env = &PL_start_env;
957 1077
958 if (cctx->flags & CC_TRACE) 1078 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1079 PL_runops = runops_trace;
960 1080
961 Zero (&myop, 1, LOGOP); 1081 Zero (&myop, 1, UNOP);
962 myop.op_next = PL_op; 1082 myop.op_next = PL_op;
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964 1084
965 PUSHMARK (SP); 1085 PUSHMARK (SP);
966 EXTEND (SP, 2); 1086 EXTEND (SP, 2);
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1087 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969 PUTBACK; 1089 PUTBACK;
970 PL_op = (OP *)&myop; 1090 PL_op = (OP *)&myop;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972 SPAGAIN; 1092 SPAGAIN;
973} 1093}
974 1094
1095/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void
1097transfer_tail (pTHX)
1098{
1099 free_coro_mortal (aTHX);
1100}
1101
975/* 1102/*
976 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
977 */ 1104 */
978static void 1105static void
979cctx_run (void *arg) 1106cctx_run (void *arg)
980{ 1107{
1108#ifdef USE_ITHREADS
1109# if CORO_PTHREAD
1110 PERL_SET_CONTEXT (coro_thx);
1111# endif
1112#endif
1113 {
981 dTHX; 1114 dTHX;
982 1115
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1116 /* normally we would need to skip the entersub here */
984 UNLOCK; 1117 /* not doing so will re-execute it, which is exactly what we want */
985
986 /* we now skip the entersub that lead to transfer() */
987 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
988 1119
989 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1122
1123 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX);
1125
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1126 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1127 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1128 perl_run (PL_curinterp);
995 1129
996 /* 1130 /*
997 * If perl-run returns we assume exit() was being called or the coro 1131 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug) 1132 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the 1133 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main" 1134 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1135 * coroutine as Coro has no such concept
1002 */ 1136 */
1003 PL_top_env = main_top_env; 1137 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 }
1005} 1140}
1006 1141
1007static coro_cctx * 1142static coro_cctx *
1008cctx_new () 1143cctx_new ()
1009{ 1144{
1010 coro_cctx *cctx; 1145 coro_cctx *cctx;
1146
1147 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx);
1149
1150 cctx->gen = cctx_gen;
1151 cctx->flags = 0;
1152 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1153
1154 return cctx;
1155}
1156
1157/* create a new cctx only suitable as source */
1158static coro_cctx *
1159cctx_new_empty ()
1160{
1161 coro_cctx *cctx = cctx_new ();
1162
1163 cctx->sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165
1166 return cctx;
1167}
1168
1169/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx *
1171cctx_new_run ()
1172{
1173 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1174 void *stack_start;
1012 size_t stack_size; 1175 size_t stack_size;
1013 1176
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1177#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1179 /* mmap supposedly does allocate-on-write for us */
1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1181
1023 if (cctx->sptr != (void *)-1) 1182 if (cctx->sptr != (void *)-1)
1024 { 1183 {
1025# if CORO_STACKGUARD 1184 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1186 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1189 cctx->flags |= CC_MAPPED;
1031 } 1190 }
1032 else 1191 else
1033#endif 1192#endif
1034 { 1193 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1195 New (0, cctx->sptr, cctx_stacksize, long);
1037 1196
1038 if (!cctx->sptr) 1197 if (!cctx->sptr)
1039 { 1198 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1199 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1200 _exit (EXIT_FAILURE);
1042 } 1201 }
1043 1202
1044 stack_start = cctx->sptr; 1203 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1204 stack_size = cctx->ssize;
1046 } 1205 }
1047 1206
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1212
1051 return cctx; 1213 return cctx;
1052} 1214}
1053 1215
… …
1056{ 1218{
1057 if (!cctx) 1219 if (!cctx)
1058 return; 1220 return;
1059 1221
1060 --cctx_count; 1222 --cctx_count;
1223 coro_destroy (&cctx->cctx);
1061 1224
1225 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr)
1227 {
1062#if CORO_USE_VALGRIND 1228 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1230 #endif
1065 1231
1066#if HAVE_MMAP 1232#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1233 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1234 munmap (cctx->sptr, cctx->ssize);
1069 else 1235 else
1070#endif 1236#endif
1071 Safefree (cctx->sptr); 1237 Safefree (cctx->sptr);
1238 }
1072 1239
1073 Safefree (cctx); 1240 Safefree (cctx);
1074} 1241}
1075 1242
1076/* wether this cctx should be destructed */ 1243/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1245
1079static coro_cctx * 1246static coro_cctx *
1080cctx_get (pTHX) 1247cctx_get (pTHX)
1081{ 1248{
1082 while (expect_true (cctx_first)) 1249 while (expect_true (cctx_first))
… …
1089 return cctx; 1256 return cctx;
1090 1257
1091 cctx_destroy (cctx); 1258 cctx_destroy (cctx);
1092 } 1259 }
1093 1260
1094 return cctx_new (); 1261 return cctx_new_run ();
1095} 1262}
1096 1263
1097static void 1264static void
1098cctx_put (coro_cctx *cctx) 1265cctx_put (coro_cctx *cctx)
1099{ 1266{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1268
1100 /* free another cctx if overlimit */ 1269 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1270 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1271 {
1103 coro_cctx *first = cctx_first; 1272 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1273 cctx_first = first->next;
1105 --cctx_idle; 1274 --cctx_idle;
1106 1275
… …
1115/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
1116 1285
1117static void 1286static void
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1288{
1289 /* TODO: throwing up here is considered harmful */
1290
1120 if (expect_true (prev != next)) 1291 if (expect_true (prev != next))
1121 { 1292 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1123 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1124 1295
1125 if (expect_false (next->flags & CF_RUNNING)) 1296 if (expect_false (next->flags & CF_RUNNING))
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1127 1298
1128 if (expect_false (next->flags & CF_DESTROYED)) 1299 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1130 1301
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1302#if !PERL_VERSION_ATLEAST (5,10,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif
1139 } 1306 }
1140} 1307}
1141 1308
1142/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
1143static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
1144transfer (pTHX_ struct coro *prev, struct coro *next) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1312{
1146 dSTACKLEVEL; 1313 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1314
1149 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1316 if (expect_false (!next))
1151 { 1317 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1153 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1154 } 1320 }
1155 else if (expect_true (prev != next)) 1321 else if (expect_true (prev != next))
1156 { 1322 {
1157 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
1158 1324
1159 if (expect_false (prev->flags & CF_NEW)) 1325 if (expect_false (prev->flags & CF_NEW))
1160 { 1326 {
1161 /* create a new empty context */ 1327 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1328 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1329 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1165 } 1331 }
1166 1332
1167 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1168 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1169
1170 LOCK;
1171 1335
1172 /* first get rid of the old state */ 1336 /* first get rid of the old state */
1173 save_perl (aTHX_ prev); 1337 save_perl (aTHX_ prev);
1174 1338
1175 if (expect_false (next->flags & CF_NEW)) 1339 if (expect_false (next->flags & CF_NEW))
… …
1182 else 1346 else
1183 load_perl (aTHX_ next); 1347 load_perl (aTHX_ next);
1184 1348
1185 prev__cctx = prev->cctx; 1349 prev__cctx = prev->cctx;
1186 1350
1187 /* possibly "free" the cctx */ 1351 /* possibly untie and reuse the cctx */
1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1352 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel
1354 && !(prev__cctx->flags & CC_TRACE)
1355 && !force_cctx
1356 ))
1189 { 1357 {
1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1192 1360
1193 prev->cctx = 0; 1361 prev->cctx = 0;
1194 1362
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1203 1371
1204 ++next->usecount; 1372 ++next->usecount;
1205 1373
1206 if (expect_true (!next->cctx)) 1374 if (expect_true (!next->cctx))
1207 next->cctx = cctx_get (aTHX); 1375 next->cctx = cctx_get (aTHX);
1208
1209 has_throw = !!next->throw;
1210 1376
1211 if (expect_false (prev__cctx != next->cctx)) 1377 if (expect_false (prev__cctx != next->cctx))
1212 { 1378 {
1213 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1214 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1216 } 1382 }
1217 1383
1218 free_coro_mortal (aTHX); 1384 transfer_tail (aTHX);
1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
1233 } 1385 }
1234} 1386}
1235 1387
1236struct transfer_args
1237{
1238 struct coro *prev, *next;
1239};
1240
1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243 1390
1244/** high level stuff ********************************************************/ 1391/** high level stuff ********************************************************/
1245 1392
1246static int 1393static int
1247coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1248{ 1395{
1249 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1250 return 0; 1397 return 0;
1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1251 1401
1252 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1253 1403
1254 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1255 { 1405 {
1256 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1257 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1258 LOCK;
1259 --coro_nready; 1408 --coro_nready;
1260 UNLOCK;
1261 } 1409 }
1262 else 1410 else
1263 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1264 1412
1265 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1266 { 1414 {
1267 struct coro temp; 1415 struct coro temp;
1268 1416
1269 if (coro->flags & CF_RUNNING) 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1270 croak ("FATAL: tried to destroy currently running coroutine");
1271 1418
1272 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1273 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1274 1421
1275 coro_destroy (aTHX_ coro); 1422 coro_destruct (aTHX_ coro);
1276 1423
1277 load_perl (aTHX_ &temp); 1424 load_perl (aTHX_ &temp);
1278 1425
1279 coro->slot = 0; 1426 coro->slot = 0;
1280 } 1427 }
… …
1326# define MGf_DUP 0 1473# define MGf_DUP 0
1327#endif 1474#endif
1328}; 1475};
1329 1476
1330static void 1477static void
1331prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1332{ 1479{
1333 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1334 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1335 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1336} 1483}
1337 1484
1338static void 1485static void
1339api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1340{ 1487{
1341 dTHX;
1342 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1343 1489
1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1345 TRANSFER (ta); 1491 TRANSFER (ta, 1);
1346} 1492}
1347 1493
1348/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1349 1495
1350static void 1496INLINE void
1351coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1352{ 1498{
1353 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1354} 1500}
1355 1501
1356static SV * 1502INLINE SV *
1357coro_deq (pTHX) 1503coro_deq (pTHX)
1358{ 1504{
1359 int prio; 1505 int prio;
1360 1506
1361 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1364 1510
1365 return 0; 1511 return 0;
1366} 1512}
1367 1513
1368static int 1514static int
1369api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1370{ 1516{
1371 dTHX;
1372 struct coro *coro; 1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1373 1520
1374 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
1375 coro_sv = SvRV (coro_sv); 1522 coro_sv = SvRV (coro_sv);
1376 1523
1377 coro = SvSTATE (coro_sv); 1524 coro = SvSTATE (coro_sv);
… …
1379 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1380 return 0; 1527 return 0;
1381 1528
1382 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1383 1530
1384 LOCK; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1385 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro);
1386 ++coro_nready; 1535 ++coro_nready;
1387 UNLOCK; 1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1388 1555
1389 return 1; 1556 return 1;
1390} 1557}
1391 1558
1392static int 1559static int
1393api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1394{ 1561{
1395 dTHX;
1396 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397} 1563}
1398 1564
1399static void 1565INLINE void
1400prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1401{ 1567{
1402 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1403 1569
1404 for (;;) 1570 for (;;)
1405 { 1571 {
1406 LOCK;
1407 next_sv = coro_deq (aTHX); 1572 next_sv = coro_deq (aTHX);
1408 1573
1409 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1410 if (expect_false (!next_sv)) 1575 if (expect_false (!next_sv))
1411 { 1576 {
1412 dSP; 1577 dSP;
1413 UNLOCK;
1414 1578
1415 ENTER; 1579 ENTER;
1416 SAVETMPS; 1580 SAVETMPS;
1417 1581
1418 PUSHMARK (SP); 1582 PUSHMARK (SP);
… …
1423 FREETMPS; 1587 FREETMPS;
1424 LEAVE; 1588 LEAVE;
1425 continue; 1589 continue;
1426 } 1590 }
1427 1591
1428 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1429 1593
1430 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1431 if (expect_false (ta->next->flags & CF_DESTROYED)) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1432 { 1596 {
1433 UNLOCK;
1434 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1435 /* coro_nready is already taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1436 continue; 1599 continue;
1437 } 1600 }
1438 1601
1439 --coro_nready; 1602 --coro_nready;
1440 UNLOCK;
1441 break; 1603 break;
1442 } 1604 }
1443 1605
1444 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1445 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1446 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1447 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1448 assert (ta->next->flags & CF_READY); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1449 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1451 1613
1452 LOCK;
1453 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1454 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1455 UNLOCK;
1456} 1616}
1457 1617
1458static void 1618INLINE void
1459prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1460{ 1620{
1461 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1462 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1463} 1623}
1464 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1465static int 1648static int
1466prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1467{ 1650{
1468 if (coro_nready) 1651 struct coro_transfer_args ta;
1469 { 1652
1470 SV *prev = SvRV (coro_current);
1471 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1472 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1473 return 1; 1658 return 1;
1474 } 1659 }
1475 else 1660 else
1476 return 0; 1661 return 0;
1477} 1662}
1478 1663
1479static void
1480api_schedule (void)
1481{
1482 dTHX;
1483 struct transfer_args ta;
1484
1485 prepare_schedule (aTHX_ &ta);
1486 TRANSFER (ta);
1487}
1488
1489static int 1664static int
1490api_cede (void) 1665api_cede_notself (pTHX)
1491{ 1666{
1492 dTHX; 1667 if (coro_nready)
1668 {
1493 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1494 1670
1495 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1496
1497 if (expect_true (ta.prev != ta.next))
1498 {
1499 TRANSFER (ta); 1672 TRANSFER (ta, 1);
1500 return 1; 1673 return 1;
1501 } 1674 }
1502 else 1675 else
1503 return 0; 1676 return 0;
1504} 1677}
1505 1678
1506static int 1679static void
1507api_cede_notself (void)
1508{
1509 dTHX;
1510 struct transfer_args ta;
1511
1512 if (prepare_cede_notself (aTHX_ &ta))
1513 {
1514 TRANSFER (ta);
1515 return 1;
1516 }
1517 else
1518 return 0;
1519}
1520
1521static void
1522api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1523{ 1681{
1524 dTHX;
1525 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1526 1683
1527 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1528 { 1685 {
1529 if (!coro->cctx) 1686 if (!coro->cctx)
1530 coro->cctx = cctx_new (); 1687 coro->cctx = cctx_new_run ();
1531 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1533 1690
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 } 1692 }
1536 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1537 { 1694 {
… …
1542 else 1699 else
1543 coro->slot->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1544 } 1701 }
1545} 1702}
1546 1703
1704/*****************************************************************************/
1705/* PerlIO::cede */
1706
1707typedef struct
1708{
1709 PerlIOBuf base;
1710 NV next, every;
1711} PerlIOCede;
1712
1713static IV
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every;
1720
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722}
1723
1724static SV *
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728
1729 return newSVnv (self->every);
1730}
1731
1732static IV
1733PerlIOCede_flush (pTHX_ PerlIO *f)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 double now = nvtime ();
1737
1738 if (now >= self->next)
1739 {
1740 api_cede (aTHX);
1741 self->next = now + self->every;
1742 }
1743
1744 return PerlIOBuf_flush (aTHX_ f);
1745}
1746
1747static PerlIO_funcs PerlIO_cede =
1748{
1749 sizeof(PerlIO_funcs),
1750 "cede",
1751 sizeof(PerlIOCede),
1752 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1753 PerlIOCede_pushed,
1754 PerlIOBuf_popped,
1755 PerlIOBuf_open,
1756 PerlIOBase_binmode,
1757 PerlIOCede_getarg,
1758 PerlIOBase_fileno,
1759 PerlIOBuf_dup,
1760 PerlIOBuf_read,
1761 PerlIOBuf_unread,
1762 PerlIOBuf_write,
1763 PerlIOBuf_seek,
1764 PerlIOBuf_tell,
1765 PerlIOBuf_close,
1766 PerlIOCede_flush,
1767 PerlIOBuf_fill,
1768 PerlIOBase_eof,
1769 PerlIOBase_error,
1770 PerlIOBase_clearerr,
1771 PerlIOBase_setlinebuf,
1772 PerlIOBuf_get_base,
1773 PerlIOBuf_bufsiz,
1774 PerlIOBuf_get_ptr,
1775 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt,
1777};
1778
1779/*****************************************************************************/
1780
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP *
1791pp_restore (pTHX)
1792{
1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1795
1796 PUSHMARK (SP);
1797
1798 EXTEND (SP, slf_argc + 1);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806}
1807
1808static void
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (PL_op->op_flags & OPf_STACKED)
1988 {
1989 if (items > slf_arga)
1990 {
1991 slf_arga = items;
1992 free (slf_argv);
1993 slf_argv = malloc (slf_arga * sizeof (SV *));
1994 }
1995
1996 slf_argc = items;
1997
1998 for (i = 0; i < items; ++i)
1999 slf_argv [i] = SvREFCNT_inc (arg [i]);
2000 }
2001 else
2002 slf_argc = 0;
2003
2004 PL_op->op_ppaddr = pp_slf;
2005 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007 PL_op = (OP *)&slf_restore;
2008}
2009
2010/*****************************************************************************/
2011
2012static void
2013coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014{
2015 SV *count_sv = AvARRAY (av)[0];
2016 IV count = SvIVX (count_sv);
2017
2018 count += adjust;
2019 SvIVX (count_sv) = count;
2020
2021 /* now wake up as many waiters as are expected to lock */
2022 while (count > 0 && AvFILLp (av) > 0)
2023 {
2024 SV *cb;
2025
2026 /* swap first two elements so we can shift a waiter */
2027 AvARRAY (av)[0] = AvARRAY (av)[1];
2028 AvARRAY (av)[1] = count_sv;
2029 cb = av_shift (av);
2030
2031 if (SvOBJECT (cb))
2032 api_ready (aTHX_ cb);
2033 else
2034 croak ("callbacks not yet supported");
2035
2036 SvREFCNT_dec (cb);
2037
2038 --count;
2039 }
2040}
2041
2042static void
2043coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2044{
2045 /* call $sem->adjust (0) to possibly wake up some other waiters */
2046 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2047}
2048
2049static int
2050slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2051{
2052 AV *av = (AV *)frame->data;
2053 SV *count_sv = AvARRAY (av)[0];
2054
2055 if (SvIVX (count_sv) > 0)
2056 {
2057 SvSTATE_current->on_destroy = 0;
2058 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2059 return 0;
2060 }
2061 else
2062 {
2063 int i;
2064 /* if we were woken up but can't down, we look through the whole */
2065 /* waiters list and only add us if we aren't in there already */
2066 /* this avoids some degenerate memory usage cases */
2067
2068 for (i = 1; i <= AvFILLp (av); ++i)
2069 if (AvARRAY (av)[i] == SvRV (coro_current))
2070 return 1;
2071
2072 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2073 return 1;
2074 }
2075}
2076
2077static void
2078slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079{
2080 AV *av = (AV *)SvRV (arg [0]);
2081
2082 if (SvIVX (AvARRAY (av)[0]) > 0)
2083 {
2084 frame->data = (void *)av;
2085 frame->prepare = prepare_nop;
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088 else
2089 {
2090 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091
2092 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093 frame->prepare = prepare_schedule;
2094
2095 /* to avoid race conditions when a woken-up coro gets terminated */
2096 /* we arrange for a temporary on_destroy that calls adjust (0) */
2097 assert (!SvSTATE_current->on_destroy);//D
2098 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2099 }
2100
2101 frame->check = slf_check_semaphore_down;
2102
2103}
2104
2105/*****************************************************************************/
2106
2107#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2108
2109/* create a closure from XS, returns a code reference */
2110/* the arg can be accessed via GENSUB_ARG from the callback */
2111/* the callback must use dXSARGS/XSRETURN */
2112static SV *
2113gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2114{
2115 CV *cv = (CV *)NEWSV (0, 0);
2116
2117 sv_upgrade ((SV *)cv, SVt_PVCV);
2118
2119 CvANON_on (cv);
2120 CvISXSUB_on (cv);
2121 CvXSUB (cv) = xsub;
2122 GENSUB_ARG = arg;
2123
2124 return newRV_noinc ((SV *)cv);
2125}
2126
2127/*****************************************************************************/
2128
1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2129MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548 2130
1549PROTOTYPES: DISABLE 2131PROTOTYPES: DISABLE
1550 2132
1551BOOT: 2133BOOT:
1552{ 2134{
1553#ifdef USE_ITHREADS 2135#ifdef USE_ITHREADS
1554 MUTEX_INIT (&coro_mutex); 2136# if CORO_PTHREAD
2137 coro_thx = PERL_GET_CONTEXT;
2138# endif
1555#endif 2139#endif
1556 BOOT_PAGESIZE; 2140 BOOT_PAGESIZE;
1557 2141
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2142 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2143 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560 2144
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2145 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2146 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2147 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565 2148
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2149 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2150 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2151 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569 2152
… …
1578 main_top_env = PL_top_env; 2161 main_top_env = PL_top_env;
1579 2162
1580 while (main_top_env->je_prev) 2163 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev; 2164 main_top_env = main_top_env->je_prev;
1582 2165
2166 {
2167 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2168
2169 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2170 hv_store_ent (PL_custom_op_names, slf,
2171 newSVpv ("coro_slf", 0), 0);
2172
2173 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2174 hv_store_ent (PL_custom_op_descs, slf,
2175 newSVpv ("coro schedule like function", 0), 0);
2176 }
2177
1583 coroapi.ver = CORO_API_VERSION; 2178 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION; 2179 coroapi.rev = CORO_API_REVISION;
2180
1585 coroapi.transfer = api_transfer; 2181 coroapi.transfer = api_transfer;
2182
2183 coroapi.sv_state = SvSTATE_;
2184 coroapi.execute_slf = api_execute_slf;
2185 coroapi.prepare_nop = prepare_nop;
2186 coroapi.prepare_schedule = prepare_schedule;
2187 coroapi.prepare_cede = prepare_cede;
2188 coroapi.prepare_cede_notself = prepare_cede_notself;
2189
2190 {
2191 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2192
2193 if (!svp) croak ("Time::HiRes is required");
2194 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2195
2196 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2197 }
1586 2198
1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2199 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588} 2200}
1589 2201
1590SV * 2202SV *
… …
1614 av_push (coro->args, newSVsv (ST (i))); 2226 av_push (coro->args, newSVsv (ST (i)));
1615} 2227}
1616 OUTPUT: 2228 OUTPUT:
1617 RETVAL 2229 RETVAL
1618 2230
1619# these not obviously related functions are all rolled into the same xs
1620# function to increase chances that they all will call transfer with the same
1621# stack offset
1622void 2231void
1623_set_stacklevel (...) 2232_set_stacklevel (...)
1624 ALIAS: 2233 CODE:
1625 Coro::State::transfer = 1 2234 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1626 Coro::schedule = 2
1627 Coro::cede = 3
1628 Coro::cede_notself = 4
1629 CODE:
1630{
1631 struct transfer_args ta;
1632 2235
1633 PUTBACK; 2236void
1634 switch (ix) 2237transfer (...)
1635 { 2238 PROTOTYPE: $$
1636 case 0: 2239 CODE:
1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2240 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1638 ta.next = 0;
1639 break;
1640
1641 case 1:
1642 if (items != 2)
1643 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644
1645 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1646 break;
1647
1648 case 2:
1649 prepare_schedule (aTHX_ &ta);
1650 break;
1651
1652 case 3:
1653 prepare_cede (aTHX_ &ta);
1654 break;
1655
1656 case 4:
1657 if (!prepare_cede_notself (aTHX_ &ta))
1658 XSRETURN_EMPTY;
1659
1660 break;
1661 }
1662 SPAGAIN;
1663
1664 BARRIER;
1665 PUTBACK;
1666 TRANSFER (ta);
1667 SPAGAIN; /* might be the sp of a different coroutine now */
1668 /* be extra careful not to ever do anything after TRANSFER */
1669}
1670 2241
1671bool 2242bool
1672_destroy (SV *coro_sv) 2243_destroy (SV *coro_sv)
1673 CODE: 2244 CODE:
1674 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2245 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675 OUTPUT: 2246 OUTPUT:
1676 RETVAL 2247 RETVAL
1677 2248
1678void 2249void
1679_exit (code) 2250_exit (int code)
1680 int code
1681 PROTOTYPE: $ 2251 PROTOTYPE: $
1682 CODE: 2252 CODE:
1683 _exit (code); 2253 _exit (code);
1684 2254
1685int 2255int
1686cctx_stacksize (int new_stacksize = 0) 2256cctx_stacksize (int new_stacksize = 0)
2257 PROTOTYPE: ;$
1687 CODE: 2258 CODE:
1688 RETVAL = coro_stacksize; 2259 RETVAL = cctx_stacksize;
1689 if (new_stacksize) 2260 if (new_stacksize)
2261 {
1690 coro_stacksize = new_stacksize; 2262 cctx_stacksize = new_stacksize;
2263 ++cctx_gen;
2264 }
1691 OUTPUT: 2265 OUTPUT:
1692 RETVAL 2266 RETVAL
1693 2267
1694int 2268int
2269cctx_max_idle (int max_idle = 0)
2270 PROTOTYPE: ;$
2271 CODE:
2272 RETVAL = cctx_max_idle;
2273 if (max_idle > 1)
2274 cctx_max_idle = max_idle;
2275 OUTPUT:
2276 RETVAL
2277
2278int
1695cctx_count () 2279cctx_count ()
2280 PROTOTYPE:
1696 CODE: 2281 CODE:
1697 RETVAL = cctx_count; 2282 RETVAL = cctx_count;
1698 OUTPUT: 2283 OUTPUT:
1699 RETVAL 2284 RETVAL
1700 2285
1701int 2286int
1702cctx_idle () 2287cctx_idle ()
2288 PROTOTYPE:
1703 CODE: 2289 CODE:
1704 RETVAL = cctx_idle; 2290 RETVAL = cctx_idle;
1705 OUTPUT: 2291 OUTPUT:
1706 RETVAL 2292 RETVAL
1707 2293
1708void 2294void
1709list () 2295list ()
2296 PROTOTYPE:
1710 PPCODE: 2297 PPCODE:
1711{ 2298{
1712 struct coro *coro; 2299 struct coro *coro;
1713 for (coro = coro_first; coro; coro = coro->next) 2300 for (coro = coro_first; coro; coro = coro->next)
1714 if (coro->hv) 2301 if (coro->hv)
… …
1719call (Coro::State coro, SV *coderef) 2306call (Coro::State coro, SV *coderef)
1720 ALIAS: 2307 ALIAS:
1721 eval = 1 2308 eval = 1
1722 CODE: 2309 CODE:
1723{ 2310{
1724 if (coro->mainstack) 2311 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1725 { 2312 {
1726 struct coro temp; 2313 struct coro temp;
1727 2314
1728 if (!(coro->flags & CF_RUNNING)) 2315 if (!(coro->flags & CF_RUNNING))
1729 { 2316 {
… …
1773 RETVAL = boolSV (coro->flags & ix); 2360 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT: 2361 OUTPUT:
1775 RETVAL 2362 RETVAL
1776 2363
1777void 2364void
2365throw (Coro::State self, SV *throw = &PL_sv_undef)
2366 PROTOTYPE: $;$
2367 CODE:
2368{
2369 struct coro *current = SvSTATE_current;
2370 SV **throwp = self == current ? &coro_throw : &self->throw;
2371 SvREFCNT_dec (*throwp);
2372 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2373}
2374
2375void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2376api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2377 PROTOTYPE: $;$
2378 C_ARGS: aTHX_ coro, flags
1779 2379
1780SV * 2380SV *
1781has_stack (Coro::State coro) 2381has_cctx (Coro::State coro)
1782 PROTOTYPE: $ 2382 PROTOTYPE: $
1783 CODE: 2383 CODE:
1784 RETVAL = boolSV (!!coro->cctx); 2384 RETVAL = boolSV (!!coro->cctx);
1785 OUTPUT: 2385 OUTPUT:
1786 RETVAL 2386 RETVAL
… …
1791 CODE: 2391 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2392 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT: 2393 OUTPUT:
1794 RETVAL 2394 RETVAL
1795 2395
1796IV 2396UV
1797rss (Coro::State coro) 2397rss (Coro::State coro)
1798 PROTOTYPE: $ 2398 PROTOTYPE: $
1799 ALIAS: 2399 ALIAS:
1800 usecount = 1 2400 usecount = 1
1801 CODE: 2401 CODE:
… …
1805 case 1: RETVAL = coro->usecount; break; 2405 case 1: RETVAL = coro->usecount; break;
1806 } 2406 }
1807 OUTPUT: 2407 OUTPUT:
1808 RETVAL 2408 RETVAL
1809 2409
2410void
2411force_cctx ()
2412 PROTOTYPE:
2413 CODE:
2414 SvSTATE_current->cctx->idle_sp = 0;
2415
2416void
2417swap_defsv (Coro::State self)
2418 PROTOTYPE: $
2419 ALIAS:
2420 swap_defav = 1
2421 CODE:
2422 if (!self->slot)
2423 croak ("cannot swap state with coroutine that has no saved state,");
2424 else
2425 {
2426 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2427 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2428
2429 SV *tmp = *src; *src = *dst; *dst = tmp;
2430 }
1810 2431
1811MODULE = Coro::State PACKAGE = Coro 2432MODULE = Coro::State PACKAGE = Coro
1812 2433
1813BOOT: 2434BOOT:
1814{ 2435{
1815 int i; 2436 int i;
1816 2437
2438 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1817 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2439 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1818 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2440 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1819 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1820 2441
1821 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2442 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1822 SvREADONLY_on (coro_current); 2443 SvREADONLY_on (coro_current);
1823 2444
1824 coro_stash = gv_stashpv ("Coro", TRUE); 2445 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1832 2453
1833 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2454 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1834 coro_ready[i] = newAV (); 2455 coro_ready[i] = newAV ();
1835 2456
1836 { 2457 {
1837 SV *sv = perl_get_sv ("Coro::API", TRUE); 2458 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1838 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1839 2459
1840 coroapi.schedule = api_schedule; 2460 coroapi.schedule = api_schedule;
1841 coroapi.cede = api_cede; 2461 coroapi.cede = api_cede;
1842 coroapi.cede_notself = api_cede_notself; 2462 coroapi.cede_notself = api_cede_notself;
1843 coroapi.ready = api_ready; 2463 coroapi.ready = api_ready;
1844 coroapi.is_ready = api_is_ready; 2464 coroapi.is_ready = api_is_ready;
1845 coroapi.nready = &coro_nready; 2465 coroapi.nready = coro_nready;
1846 coroapi.current = coro_current; 2466 coroapi.current = coro_current;
1847 2467
1848 GCoroAPI = &coroapi; 2468 GCoroAPI = &coroapi;
1849 sv_setiv (sv, (IV)&coroapi); 2469 sv_setiv (sv, (IV)&coroapi);
1850 SvREADONLY_on (sv); 2470 SvREADONLY_on (sv);
1851 } 2471 }
1852} 2472}
2473
2474void
2475schedule (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2478
2479void
2480cede (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede);
2483
2484void
2485cede_notself (...)
2486 CODE:
2487 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1853 2488
1854void 2489void
1855_set_current (SV *current) 2490_set_current (SV *current)
1856 PROTOTYPE: $ 2491 PROTOTYPE: $
1857 CODE: 2492 CODE:
1858 SvREFCNT_dec (SvRV (coro_current)); 2493 SvREFCNT_dec (SvRV (coro_current));
1859 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2494 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2495
2496void
2497_set_readyhook (SV *hook)
2498 PROTOTYPE: $
2499 CODE:
2500 SvREFCNT_dec (coro_readyhook);
2501 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1860 2502
1861int 2503int
1862prio (Coro::State coro, int newprio = 0) 2504prio (Coro::State coro, int newprio = 0)
2505 PROTOTYPE: $;$
1863 ALIAS: 2506 ALIAS:
1864 nice = 1 2507 nice = 1
1865 CODE: 2508 CODE:
1866{ 2509{
1867 RETVAL = coro->prio; 2510 RETVAL = coro->prio;
… …
1882 2525
1883SV * 2526SV *
1884ready (SV *self) 2527ready (SV *self)
1885 PROTOTYPE: $ 2528 PROTOTYPE: $
1886 CODE: 2529 CODE:
1887 RETVAL = boolSV (api_ready (self)); 2530 RETVAL = boolSV (api_ready (aTHX_ self));
1888 OUTPUT: 2531 OUTPUT:
1889 RETVAL 2532 RETVAL
1890 2533
1891int 2534int
1892nready (...) 2535nready (...)
… …
1894 CODE: 2537 CODE:
1895 RETVAL = coro_nready; 2538 RETVAL = coro_nready;
1896 OUTPUT: 2539 OUTPUT:
1897 RETVAL 2540 RETVAL
1898 2541
1899void
1900throw (Coro::State self, SV *throw = &PL_sv_undef)
1901 PROTOTYPE: $;$
1902 CODE:
1903 SvREFCNT_dec (self->throw);
1904 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1905
1906void
1907swap_defsv (Coro::State self)
1908 PROTOTYPE: $
1909 ALIAS:
1910 swap_defav = 1
1911 CODE:
1912 if (!self->slot)
1913 croak ("cannot swap state with coroutine that has no saved state");
1914 else
1915 {
1916 SV **src = ix ? (SV *)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1917 SV **dst = ix ? self->slot->defav : self->slot->defsv;
1918
1919 SV *tmp = *src; *src = *dst; *dst = tmp;
1920 }
1921
1922# for async_pool speedup 2542# for async_pool speedup
1923void 2543void
1924_pool_1 (SV *cb) 2544_pool_1 (SV *cb)
1925 CODE: 2545 CODE:
1926{ 2546{
1927 struct coro *coro = SvSTATE (coro_current);
1928 HV *hv = (HV *)SvRV (coro_current); 2547 HV *hv = (HV *)SvRV (coro_current);
2548 struct coro *coro = SvSTATE_hv ((SV *)hv);
1929 AV *defav = GvAV (PL_defgv); 2549 AV *defav = GvAV (PL_defgv);
1930 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2550 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1931 AV *invoke_av; 2551 AV *invoke_av;
1932 int i, len; 2552 int i, len;
1933 2553
1934 if (!invoke) 2554 if (!invoke)
1935 { 2555 {
1936 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2556 SV *old = PL_diehook;
2557 PL_diehook = 0;
2558 SvREFCNT_dec (old);
1937 croak ("\3async_pool terminate\2\n"); 2559 croak ("\3async_pool terminate\2\n");
1938 } 2560 }
1939 2561
1940 SvREFCNT_dec (coro->saved_deffh); 2562 SvREFCNT_dec (coro->saved_deffh);
1941 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2563 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1942 2564
1943 hv_store (hv, "desc", sizeof ("desc") - 1, 2565 hv_store (hv, "desc", sizeof ("desc") - 1,
1944 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2566 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1945 2567
1946 invoke_av = (AV *)SvRV (invoke); 2568 invoke_av = (AV *)SvRV (invoke);
… …
1950 2572
1951 if (len > 0) 2573 if (len > 0)
1952 { 2574 {
1953 av_fill (defav, len - 1); 2575 av_fill (defav, len - 1);
1954 for (i = 0; i < len; ++i) 2576 for (i = 0; i < len; ++i)
1955 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2577 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1956 } 2578 }
1957
1958 SvREFCNT_dec (invoke);
1959} 2579}
1960 2580
1961void 2581void
1962_pool_2 (SV *cb) 2582_pool_2 (SV *cb)
1963 CODE: 2583 CODE:
1964{ 2584{
1965 struct coro *coro = SvSTATE (coro_current); 2585 HV *hv = (HV *)SvRV (coro_current);
2586 struct coro *coro = SvSTATE_hv ((SV *)hv);
1966 2587
1967 sv_setsv (cb, &PL_sv_undef); 2588 sv_setsv (cb, &PL_sv_undef);
1968 2589
1969 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2590 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1970 coro->saved_deffh = 0; 2591 coro->saved_deffh = 0;
1971 2592
1972 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2593 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1973 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2594 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1974 { 2595 {
1975 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2596 SV *old = PL_diehook;
2597 PL_diehook = 0;
2598 SvREFCNT_dec (old);
1976 croak ("\3async_pool terminate\2\n"); 2599 croak ("\3async_pool terminate\2\n");
1977 } 2600 }
1978 2601
1979 av_clear (GvAV (PL_defgv)); 2602 av_clear (GvAV (PL_defgv));
1980 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2603 hv_store (hv, "desc", sizeof ("desc") - 1,
1981 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2604 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1982 2605
1983 coro->prio = 0; 2606 coro->prio = 0;
1984 2607
1985 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2608 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1986 api_trace (coro_current, 0); 2609 api_trace (aTHX_ coro_current, 0);
1987 2610
1988 av_push (av_async_pool, newSVsv (coro_current)); 2611 av_push (av_async_pool, newSVsv (coro_current));
1989} 2612}
1990 2613
1991 2614
1992MODULE = Coro::State PACKAGE = Coro::AIO 2615MODULE = Coro::State PACKAGE = Coro::AIO
1993 2616
1994SV * 2617void
1995_get_state () 2618_get_state (SV *self)
2619 PROTOTYPE: $
1996 CODE: 2620 PPCODE:
1997{ 2621{
1998 struct io_state *data; 2622 AV *defav = GvAV (PL_defgv);
1999 2623 AV *av = newAV ();
2624 int i;
2000 RETVAL = newSV (sizeof (struct io_state)); 2625 SV *data_sv = newSV (sizeof (struct io_state));
2001 data = (struct io_state *)SvPVX (RETVAL); 2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2002 SvCUR_set (RETVAL, sizeof (struct io_state)); 2627 SvCUR_set (data_sv, sizeof (struct io_state));
2003 SvPOK_only (RETVAL); 2628 SvPOK_only (data_sv);
2004 2629
2005 data->errorno = errno; 2630 data->errorno = errno;
2006 data->laststype = PL_laststype; 2631 data->laststype = PL_laststype;
2007 data->laststatval = PL_laststatval; 2632 data->laststatval = PL_laststatval;
2008 data->statcache = PL_statcache; 2633 data->statcache = PL_statcache;
2634
2635 av_extend (av, AvFILLp (defav) + 1 + 1);
2636
2637 for (i = 0; i <= AvFILLp (defav); ++i)
2638 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2639
2640 av_push (av, data_sv);
2641
2642 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2643
2644 api_ready (aTHX_ self);
2009} 2645}
2010 OUTPUT:
2011 RETVAL
2012 2646
2013void 2647void
2014_set_state (char *data_) 2648_set_state (SV *state)
2015 PROTOTYPE: $ 2649 PROTOTYPE: $
2016 CODE: 2650 PPCODE:
2017{ 2651{
2018 struct io_state *data = (void *)data_; 2652 AV *av = (AV *)SvRV (state);
2653 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2654 int i;
2019 2655
2020 errno = data->errorno; 2656 errno = data->errorno;
2021 PL_laststype = data->laststype; 2657 PL_laststype = data->laststype;
2022 PL_laststatval = data->laststatval; 2658 PL_laststatval = data->laststatval;
2023 PL_statcache = data->statcache; 2659 PL_statcache = data->statcache;
2024}
2025 2660
2661 EXTEND (SP, AvFILLp (av));
2662 for (i = 0; i < AvFILLp (av); ++i)
2663 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2664}
2665
2666
2667MODULE = Coro::State PACKAGE = Coro::AnyEvent
2668
2669BOOT:
2670 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2671
2672void
2673_schedule (...)
2674 CODE:
2675{
2676 static int incede;
2677
2678 api_cede_notself (aTHX);
2679
2680 ++incede;
2681 while (coro_nready >= incede && api_cede (aTHX))
2682 ;
2683
2684 sv_setsv (sv_activity, &PL_sv_undef);
2685 if (coro_nready >= incede)
2686 {
2687 PUSHMARK (SP);
2688 PUTBACK;
2689 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2690 SPAGAIN;
2691 }
2692
2693 --incede;
2694}
2695
2696
2697MODULE = Coro::State PACKAGE = PerlIO::cede
2698
2699BOOT:
2700 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701
2702MODULE = Coro::State PACKAGE = Coro::Semaphore
2703
2704SV *
2705new (SV *klass, SV *count_ = 0)
2706 CODE:
2707{
2708 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2709 AV *av = newAV ();
2710 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2711 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2712}
2713 OUTPUT:
2714 RETVAL
2715
2716SV *
2717count (SV *self)
2718 CODE:
2719 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2720 OUTPUT:
2721 RETVAL
2722
2723void
2724up (SV *self, int adjust = 1)
2725 ALIAS:
2726 adjust = 1
2727 CODE:
2728 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2729
2730void
2731down (SV *self)
2732 CODE:
2733 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2734
2735void
2736try (SV *self)
2737 PPCODE:
2738{
2739 AV *av = (AV *)SvRV (self);
2740 SV *count_sv = AvARRAY (av)[0];
2741 IV count = SvIVX (count_sv);
2742
2743 if (count > 0)
2744 {
2745 --count;
2746 SvIVX (count_sv) = count;
2747 XSRETURN_YES;
2748 }
2749 else
2750 XSRETURN_NO;
2751}
2752
2753void
2754waiters (SV *self)
2755 CODE:
2756{
2757 AV *av = (AV *)SvRV (self);
2758
2759 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2761 else
2762 {
2763 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1);
2765 for (i = 1; i <= AvFILLp (av); ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i]));
2767 }
2768}
2769

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